This is how I replace dead batteries in NES, SNES, N64, Genesis, etc. games. It takes about 15 minutes to do a nice job.







Tools required:

_ 3.8mm Security Bit (Nintendo)
_ 4.5mm Security Bit (Sega)
_ 25W Soldering Iron
_ 60/40 Solder
_ Desoldering Wick
_ CR2032 Battery
_ CR2032 Battery Holder
_ Wire
_ A little bit of time, steady hands, and patience.

Enjoy,

Mark